Internal-combustion engine.



D. ROBERTS, J. W. YOUNG '& 0. JAMES. INTERNAL COMBUSTION ENGINE.

- APPLIOATION FILE D DBO. 4, 1911. 1,077,161.

3 SHEETS-SHEET l.

Patented Oct. 28, 1913.

Witnessees':

I M WW D.'ROBERTS, J. W. YOUNG & O. JAMES.- INTERNAL COMBUSTION ENGINE.

APPLIOATION FILED DBO. 4, 1911.

1 ,077, 1 6 1 Patented Oct. 28, 1913.

8 SHEETS-SHBET 2.

Wi irzt/esses: )8 Zrwaefgfs; Q 91/ W M/ y a-aiw JFW;

1). ROBERTS; J. w.- YOUNG & c.- JAMES. INTERNAL COMBUSTION ENGINE. I

APPLIUATION FILED DEC. 4, 19 11.

1,077,161. Patented Oct. 28, 1913-.

3 BKEETHHEET 3.

sra'rnsnr fric DAVID ROBERTS, JOHN WILLIAM YOUNG, AND CHARLES JAMES, OF GRANTHAM,

' ENGLAND. I

INTERNAL-GGMBUSTION ENGINE.

To all whom it may concern:

Be it known that we,DAv1n Ronnn'rs, JOHN WILLIAM YOUNG, and CHARLES JAMES, all subjects of the King of Great Britain, residing at Spittlegate Iron Works, Grantham, Lincolnshire, England, have invented new and useful Improvements in Internalof the compression stroke into a charge of Combustion Engines, of which the following is a specification.

This invention relates to internal combustion engines of the kind wherein liquid hydrocarbon is injected at or near the end air compressed into a vaporizer connected to the cylinder'of the engine by a more or less contracted neck or passage.

The object of our invention is to obtain a higher efficiency and greater power than has been possible with engines of this class as hitherto constructed, the improved engine also having the advantage that it permits of the satisfactory employment without loss of eiiiciency or power of a greater range in grades of liquid hydrocarbon than has been hitherto possible.

The object, above enumerated are attained according to the invention by a particular arrangement and combination of engin'e parts and more especially result from the shape and disposition of the vaporizer and the construction and disposition of the water jacketed and hot parts thereof, also from the position and direction in Which. the liquid hydrocarbon is injected into the vaporizer, and the relation of the said vaporizer to, and its manner of cobperating.

with, the air inlet and exhaust outlet valves taken in conjunction with the means for injecting the liquid hydrocarbon rapidly and for regulating the quantity of hydrocarbon injected in accordance with the power generated by the engine.

struct an engine in which the cylinder is connected by a more or less narrow neck or passage with avaporizer of spherical shape,

the said spherical vaporizer being water,

jacketed over the whole of its surface, except a portion at theg ttom or lower side,

which portion forms the hot part constitutsaid ports being controlled by valves ar- Speeification of Letters Patent. Patented Oct. 28., 1913. Application filed December 4, 1911. Serial 30.16%,929-

ranged opposite one another, and the liquid derstood, we will describe it by reference -to the accompany ng drawings, in Wl11Cl1 Figure 1 is a sectional elevation of a pertion of a single cylinder horizontal engine constructed in accordance with our invention and adapted to operate on the four stroke cycle. F ig. 2 is a section on the line 2-2, Fig. 1. Fig. 3 is a side elevation of the engine shown in Fig. 1. Fig. t is an end view thereof. Fig. 5 is a vertical section through the vaporizer valve box. Fig. 6 'is a slmllar section. of the fuel oil pump, and Figs. and 8 are side and end elevations respectively of the governor cam, and Figs.

, 9 and 10 are similar-views of the fuel pump operating cam.

a is the cylinder, which is water-cooled in the usual manner, I) is the piston and c is the endor cover of the cylinder'which contains the -''air inlet valve cl and the exhaust outlet valve .6, the axes of these two valves being disposed at right angles to the longitudinal axis of the engine and being located in a vertical plane. I I

f is the vaporizer, which is of spherical shape as above stated and is providedover the major portion with the water jacket g,

the unjacketed portion It being at the lower part of the vaporizer and constituting the igniter. This ign ter is heated up by an external lamp when the eng ne is first started,

gine is running. ,Also it will be understood that it may be made plain as shown in the drawing, or it may be formed with a ribbed or corrugated face to increase the heating surface.

the lampbeingextinguished when the en- 4 In carrymg out our invention we con-:

mechanism 8.

horizontal check-valve 7.2 an the vertical relief-valve 70 the fuel being supplied to the said valve-box through the pipe' 10 which extends from the pump Z. The saidpump and its operating gear is of the construction described in the specification of the aforesaid prior British Patent No. 25093 of 1906, that is to say it comprises the cylinder in which there reciprocates a ptlungcr m caused to move on its up or suction stroke by a spring ml. the said upward stroke being limited by the stop m The plunger is (lGPIOF-Sffll by means of the striker n which is held by the spring; a against the face of the o 'ierating caln o mounted upon the can: shaft 7). This ram 0 is shown in Figs. 9 and 1.0 and is formed with live faces, namely, the faces 0 0 0", 0 and 0 The face 0 is concentric with the axis of the cam shaft 79 and is designed to provide an idleperiod for the pump plunger, in order to give the valve time to seat itself at the end. of the suction stroke; the second face 0 is snail-shaped and is designed to bring the striker a gently into contact with the pump plunger m. The third face 0 is the actual delivery face and effects the forcing stroke of the pump plunger m. 0 is an extension of the face 0 which merges into the fifth face 0 which is again of a snail-shape and permits the gradual or slow return or suction stroke of the plunger. Upon the cam shaft there is also mounted the cam g shown detached in Figs. 7 and 8, this cam serving to actuate the vertical valve 70 in the vaporizer valve-box 7c. The said cam is mounted upon the shaft 7) by means of a key upon the latter which engages in the spiral keyway in the cam designed to be moved axially along the shaft p by means of the governor r which controls the said cam by means of the link and lever The axial movement of the cam causes the same to rotate relatively to the shaft so that its position is varied as the speed of the engine fluctuates, thus controlling the operation of the relief-valve in accordance with the fluctuating speed. The cam shaft 7) also has mounted upon it the cam s and t which respectively control the air inlet valve (Z and exhaust outlet valve (3 through the medium of the mechanisms (11 and 6 In operation, assuming that the engine has been started by the preliminary heating of the hotpart it of the vaporizer f, the

fuel is supplied by means of the pump Z'to the vaporizer valve-box'lc and is in ected therefrom through the Hook f axially into the spherical vaporizer Whereb it is projected into the charge of air which has been compressed into the said vaporizer by the compression stroke of the piston. The explosive charge thus produced is ignited by the hot part of the vaporizer and the Working stroke of the piston takes place and is succeeded by the exhaust stroke in the ordinary manner.

The particular shape, construction and disposition of the various parts forming the complete en g'ine, we have found in prac time to give rise to a higher efiiciency than it has been hitherto possible to attain with engines of this type and in addition. to the higher etlicieney, our engine possesses sundry advantages chief among which may be mentioned the fact that a. larger range of different grades of liquid fuel can be employed Without the etliciency of the engine being thereby sensibly affected.

Our invention has been above particularly described as applied to a single cylinder horizontal engine, but it will be 0bvious that it is equally applicable to multicylinder engines and also to engines of the vertical and inclined types.

. Having now fully described and ascertained our said invention and the manner in which it is to be performed We'declare that what We claim is:- 3

In an internal combustion engine, the

combination with a cylinder, a. spherical vaporizer water jacketed throughout its extent except at the bottom'thereof Where it is provided with a hot ignition plate, a narrow neck connecting the vaporizer and the cylinder, a liquid l'iydrocarbon injection device connccted at the outer end of the vaporizer and having); its discharge a erture disposed axially of the vaporizer, t c said neck and the cylinder, said neck being pro-- vided With an air inlet aperture and an exhaust aperture arranged opposite to each other, and controlling valves for said air inlet and exhaust apertures.

DAVID ROBERT S. JOHN WILLIAM YOUNG. CHARLES JAMES.

Witnesses VVAurnn Haynes, SAMUEL lVnJnmnr PAYNE. 

